Thanks for the help, saeedc!
I get what you’re saying. Hadn’t thought of that as an option.
I think I found the answer. I was scripting things inside of a character blueprint, which was only giving me access to certain actors to use as look at targets.
Once I moved my script out to the level blueprint, everything worked as expected.
I don’t fully understand why it fixed things, though. Since the Goal actor blueprints were targetable for some unknown reason while the rest wasn’t. I can’t think of anything that is special about them.